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    <title>5.使用for循环五行递增-要求每次只输出一个☆</title>
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        var result = '';
        for (var i = 1; i <= 5; i++) {
            for (var j = 1; j <= i; j++) {
                result += '☆';
            }
            result += '\n';
        }
        console.log(result);
    </script>
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